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Pierce City Mining District (Placer Mining District), Clearwater County, Idaho, USAi
Regional Level Types
Pierce City Mining District (Placer Mining District)Mining District
Clearwater CountyCounty
IdahoState
USACountry

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PhotosMapsSearchMineralogy
09979450017272069497147.jpg
Tantalite-(Fe)

Fohl picnic area, Pierce Divide occurrence, Pierce City Mining District, Clearwater County, Idaho, USA
01673790017272069503224.jpg
Beryl, etc.

Fohl picnic area, Pierce Divide occurrence, Pierce City Mining District, Clearwater County, Idaho, USA
01868960017272058389612.jpg
Tantalite-(Fe)

Fohl picnic area, Pierce Divide occurrence, Pierce City Mining District, Clearwater County, Idaho, USA
01673790017272069503224.jpg
Beryl, etc.

Fohl picnic area, Pierce Divide occurrence, Pierce City Mining District, Clearwater County, Idaho, USA
01868960017272058389612.jpg
Tantalite-(Fe)

Fohl picnic area, Pierce Divide occurrence, Pierce City Mining District, Clearwater County, Idaho, USA
04058180017272058376140.jpg
Beryl, etc.

Fohl picnic area, Pierce Divide occurrence, Pierce City Mining District, Clearwater County, Idaho, USA
Neighbouring regions:
Weippe Mining District (Musselshell Mining District), Clearwater County, Idaho, USA
Orofino Mining District, Clearwater County, Idaho, USA
Peck Mining District, Nez Perce County, Idaho, USA
Type:
Mining District
Largest Settlements:
PlacePopulation
Orofino3,054 (2017)
Pierce487 (2017)
Weippe406 (2017)
Mindat Locality ID:
39481
Long-form identifier:
mindat:1:2:39481:4
GUID (UUID V4):
0


A Au-Pt-Ti-Fe-Hg placer mining area along Orofino Creek.

Geologic units near the site: Intrusive rocks: mostly Late Cretaceous granodioritic to granitic plutons of the Idaho batholithic assemblage, but including some Eocene intrusions; northern Idaho and Atlanta batholith.
A primarily placer Au-Pt-Ti-Fe-Hg mining district discovered in 1860 by Captain E. D. Pierce.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

22 valid minerals.

Rock Types Recorded


Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Albite var. Cleavelandite
Formula: Na(AlSi3O8)
ⓘ Almandine
Formula: Fe2+3Al2(SiO4)3
ⓘ Andalusite
Formula: Al2(SiO4)O
ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Beryl
Formula: Be3Al2(Si6O18)
ⓘ Beryl var. Aquamarine
ⓘ Cinnabar
Formula: HgS
ⓘ Corundum
Formula: Al2O3
ⓘ Corundum var. Sapphire
Formula: Al2O3
ⓘ Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ 'K Feldspar'
ⓘ Kyanite
Formula: Al2(SiO4)O
ⓘ 'Mica Group'
ⓘ Microcline
Formula: K(AlSi3O8)
ⓘ 'Monazite Group'
Formula: REE(PO4)
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Gold
Formula: Au
Localities: Reported from at least 9 localities in this region.
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
Localities: Reported from at least 6 localities in this region.
ⓘ Quartz var. Smoky Quartz
Formula: SiO2
ⓘ Rutile
Formula: TiO2
ⓘ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘ Spessartine
Formula: Mn2+3Al2(SiO4)3
ⓘ 'Tantalite'
Formula: (Mn,Fe)(Ta,Nb)2O6
ⓘ Tantalite-(Fe)
Formula: Fe2+Ta2O6
ⓘ Titanite
Formula: CaTiO(SiO4)
ⓘ Topaz
Formula: Al2(SiO4)(F,OH)2
ⓘ 'Tourmaline'
Formula: AD3G6(T6O18)(BO3)3X3Z

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘCinnabar2.CD.15aHgS
ⓘPyrite2.EB.05aFeS2
ⓘArsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
ⓘCorundum4.CB.05Al2O3
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘCorundum
var. Sapphire		4.CB.05Al2O3
ⓘQuartz4.DA.05SiO2
ⓘvar. Smoky Quartz4.DA.05SiO2
ⓘRutile4.DB.05TiO2
ⓘTantalite-(Fe)4.DB.35Fe2+Ta2O6
Group 9 - Silicates
ⓘAlmandine9.AD.25Fe2+3Al2(SiO4)3
ⓘSpessartine9.AD.25Mn2+3Al2(SiO4)3
ⓘAndalusite9.AF.10Al2(SiO4)O
ⓘKyanite9.AF.15Al2(SiO4)O
ⓘTopaz9.AF.35Al2(SiO4)(F,OH)2
ⓘTitanite9.AG.15CaTiO(SiO4)
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘBeryl
var. Aquamarine		9.CJ.05Be3Al2(Si6O18)
ⓘ9.CJ.05Be3Al2(Si6O18)
ⓘElbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘSchorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘMicrocline9.FA.30K(AlSi3O8)
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘvar. Cleavelandite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Monazite Group'-REE(PO4)
ⓘ'Tantalite'-(Mn,Fe)(Ta,Nb)2O6
ⓘ'Tourmaline'-AD3G6(T6O18)(BO3)3X3Z
ⓘ'Mica Group'-
ⓘ'K Feldspar'-
ⓘ'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
Hⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Hⓘ TopazAl2(SiO4)(F,OH)2
LiLithium
Liⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
BeBeryllium
Beⓘ BerylBe3Al2(Si6O18)
BBoron
Bⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ AndalusiteAl2(SiO4)O
Oⓘ AlmandineFe32+Al2(SiO4)3
Oⓘ BerylBe3Al2(Si6O18)
Oⓘ CorundumAl2O3
Oⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ Tantalite-(Fe)Fe2+Ta2O6
Oⓘ IlmeniteFe2+TiO3
Oⓘ KyaniteAl2(SiO4)O
Oⓘ MicroclineK(AlSi3O8)
Oⓘ Monazite GroupREE(PO4)
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ QuartzSiO2
Oⓘ RutileTiO2
Oⓘ Corundum var. SapphireAl2O3
Oⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ Quartz var. Smoky QuartzSiO2
Oⓘ SpessartineMn32+Al2(SiO4)3
Oⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
Oⓘ TitaniteCaTiO(SiO4)
Oⓘ TopazAl2(SiO4)(F,OH)2
Oⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
Oⓘ Albite var. CleavelanditeNa(AlSi3O8)
Oⓘ Garnet GroupX3Z2(SiO4)3
FFluorine
Fⓘ TopazAl2(SiO4)(F,OH)2
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Naⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Naⓘ Albite var. CleavelanditeNa(AlSi3O8)
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ AndalusiteAl2(SiO4)O
Alⓘ AlmandineFe32+Al2(SiO4)3
Alⓘ BerylBe3Al2(Si6O18)
Alⓘ CorundumAl2O3
Alⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ KyaniteAl2(SiO4)O
Alⓘ MicroclineK(AlSi3O8)
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ Corundum var. SapphireAl2O3
Alⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Alⓘ SpessartineMn32+Al2(SiO4)3
Alⓘ TopazAl2(SiO4)(F,OH)2
Alⓘ Albite var. CleavelanditeNa(AlSi3O8)
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ AndalusiteAl2(SiO4)O
Siⓘ AlmandineFe32+Al2(SiO4)3
Siⓘ BerylBe3Al2(Si6O18)
Siⓘ ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ KyaniteAl2(SiO4)O
Siⓘ MicroclineK(AlSi3O8)
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siⓘ Quartz var. Smoky QuartzSiO2
Siⓘ SpessartineMn32+Al2(SiO4)3
Siⓘ TitaniteCaTiO(SiO4)
Siⓘ TopazAl2(SiO4)(F,OH)2
Siⓘ Albite var. CleavelanditeNa(AlSi3O8)
Siⓘ Garnet GroupX3Z2(SiO4)3
PPhosphorus
Pⓘ Monazite GroupREE(PO4)
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ CinnabarHgS
Sⓘ PyriteFeS2
KPotassium
Kⓘ MicroclineK(AlSi3O8)
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ TitaniteCaTiO(SiO4)
TiTitanium
Tiⓘ IlmeniteFe2+TiO3
Tiⓘ RutileTiO2
Tiⓘ TitaniteCaTiO(SiO4)
MnManganese
Mnⓘ SpessartineMn32+Al2(SiO4)3
Mnⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
FeIron
Feⓘ ArsenopyriteFeAsS
Feⓘ AlmandineFe32+Al2(SiO4)3
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ Tantalite-(Fe)Fe2+Ta2O6
Feⓘ IlmeniteFe2+TiO3
Feⓘ PyriteFeS2
Feⓘ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Feⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
AsArsenic
Asⓘ ArsenopyriteFeAsS
NbNiobium
Nbⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
TaTantalum
Taⓘ Tantalite-(Fe)Fe2+Ta2O6
Taⓘ Tantalite(Mn,Fe)(Ta,Nb)2O6
AuGold
Auⓘ Native GoldAu
HgMercury
Hgⓘ CinnabarHgS

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Other Databases

Link to USGS MRDS:60000946

Localities in this Region

USA
USA

Other Regions, Features and Areas that Intersect

North AmericaContinent
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

DAY, D.T., AND RICHARDS, R.H. (1906), USEFUL MINERALS IN THE BLACK SANDS OF THE PACIFIC SLOPE: U.S. GEOLOGICAL SURVEY MINERAL RESOURCES OF THE UNITED STATES, CALENDAR YEAR 1905, P. 1199-1200.
SHANNON, E.V. (1922), MINERALOGY OF SOME BLACK SANDS FROM IDAHO, WITH A DESCRIPTION OF THE METHODS USED FOR THEIR STUDY: PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM, V. 60, ART. 3, 33 P.
Alfred L. Anderson (1930) The Geology and Mineral Resources of the Region About Orofino, Idaho. Pamphlet 34. Idaho Bureau of Mines and Geology
ROSS, C.P. (1941), THE METAL AND COAL MINING DISTRICTS OF IDAHO, WITH NOTES ON THE NONMETALLIC MINERAL RESOURCES OF THE STATE: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 57, part 1: 37.
STALEY, W.W. (1946), GOLD IN IDAHO: IDAHO BUREAU OF MINES AND GEOLOGY PAMPHLET 68, FIG. 16.
SAVAGE, C.N. (1961 a), ECONOMIC GEOLOGY OF CENTRAL IDAHO BLACKSAND PLACERS: ID. BUREAU OF MINES AND GEOL. BULL. 17, P. 141-148.
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
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